Idea of Intelligence Icon
There is a 2D view of a face being viewed from the side, theres no detail other then a single cog over the area of the brain, giving the idea of complex thought or knowledge or something of those likes.
This Intelligence icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.